不露情感的

例句：

1. 1. He was unexpressive in his speech, barely uttering a word.
   他在演讲中沉默寡言，几乎没说什么。
2. 2. The artist's work is unexpressive, lacking the emotional depth one would expect from such a subject.
   这位艺术家的作品不表达情感，缺乏对这种主题应有的情感深度。
3. 3.The scientist's report was unexpressive, leaving much to be desired in terms of clarity and detail.
   科学家的报告不表达情感，在清晰度和细节方面有待提高。